Gaya APA

Addison,R, ., Herudyanto, . (1981). The East Kalimantan Coal Project Report on The Coal Geology of The South Prangat Area Kutai Basin, East Kalimantan . : .

Gaya MLA

Addison,R, ., Herudyanto, . "The East Kalimantan Coal Project Report on The Coal Geology of The South Prangat Area Kutai Basin, East Kalimantan". : , 1981. Text.